Duplo DP-U550 - Buzzer; How to Set Buzzer

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Other Functions
Buzzer
This function selects buzzer ON or OFF and sets the volume of the buzzer.
How to Set Buzzer
Touch "PROPERTY".
Touch “SETTINGS”.
Touch the screen switch button in the lower right
corner of the screen twice.
Touch “BUZZER OPTION”.
Setting Function: Buzzer
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